SWITCH: Managing Water for the City of the Future

Managing Water for the City of the Future

Cleaner Production

Bogotá, Colombia

In industrial activities, Cleaner Production aims to achieve eco-efficiency by anticipating, preventing and reducing the polluting effects of emissions.

In Bogotá, the cleaner production demo focus was on micro-tanneries upstream of the city. One hundred and eighty four micro-tanneries at Villapinzón and Chocontá (Colombia) annually produce a high volume of solid wastes, approximately 3,700 tons of hair and 7,200 tons of fleshings. Without adequate handling, those wastes harmfully impact water, ground or atmosphere. In SWITCH the preventive approach, relative to the traditional end-of-pipe approach, was promoted as an environmental solution.

From the different alternatives, composting was selected in terms of its technical, economic and environmental characteristics. During 2010, a demonstration was conducted at Villapinzón, composting three tons of solid wastes: hair filtrated in dehairing, and fleshings (i.e. flesh trimmings generated in defleshing after liming).

As a result discharges of tannery wastewater into the Bogotá river were strongly reduced (BOD were reached up to 84%, TSS up to 98%, KNT up to 99% and Cr up to 94%) in some parts of the productive process. Water use was reduced by 68% in the tanning process. The community has organized itself to continue with the handling of the solid waste in a combined way.

Back to top


Resources

Click here to view a list of resources associated with Demonstrations.

Alternatively, click here to search the complete database for particular types of resources.

Back to top